Here’s the best pic I got right now. You can kind of see the strap near the booster and then mines an 08 don’t know if yours is different. But notice on my front passenger(left) head there’s a black/white #12 wire there. That is bolted with my negative cable straight to my battery. Don’t believe mine y but those smaller cables also go to the battery and then to the chassis in the front to get good ground for sensors. But you should just go negative straight to battery and block for beat ground